Bearing for the elevating-screw apparatus or field or other guns.



PATENTED APR, '7, 1903;

E. K. ROTHE. BEARING FOR THE ELEVATING SCREW APPARATUS OF FIELD OR OTHER GUNS.

I APPLICATION FILED 0.0121, 1902.

F0 MODEL.

Fries.

ERKST KARL 'ROTIIE, OF EISENAUll, GERMANY BEARING FOR THE ELEVATING-SCREW APPARATUS OF' FIELD OR OTHER GUNS.

SPECIFIlLATION forming part of Letters Patent No. 724,946, dated April 7, 1903.

Application filed October 1, 1902.

Serial No. 125,554. (No model.

To all whom it may concern.

Be it known that I, ERNST KARL KOTHE, engineer, a subject of the Grand Duke of Saxo- WVeimar, residing at Eisenach, in the Grand Duchy of Saxe-VVeimar and German Empire, have invented certain new and useful Improvements in or Relating to Bearings for the Elevating-ScrewApparatus of Field or other Guns,of which the following is a specification.

My present invention relates to an improved construction of bearing for the elevatingscrew apparatus of field and other guns, according to which the elevating apparatus is so mounted in the interior of the closed carriage-trail that the axis of the crank actuating the screw-spindle constitutes at the same time the axis of rotation of the spindle oscillating in a vertical plane.

In the accompanying drawings, Figure 1 shows in sectional elevation the new bearing device and the disposition of the elevating apparatus in the interiorof the trail. Fig.2 is a side view; Fig. 3, a plan view; Fig. 4, a partial elevation of a gun provided with an elevating apparatus arranged according to the invention.

The new bearing is destined for the wellknown screw elevating apparatus, which, as may be seen from Fig. 1, is here-arranged in the interior of the carriage-trail. The trail-tube a, is cut away or divided to receive the elevating-gear and is reinforced bya tube section b, surrounding the trail-tube. The tube a is here shown as of a closed U-shaped section. It is however, obvious that any other section-for instance, circular, square, Q1 oval-might beused, if desired. "The reinforoing-tube b is provided with a sidesocket or tubular extension to receive the bearings for the dri ng-gear d of the elevating-screw. The bevel-gear d is integral with or fixed to a shaft e, terminating at its outer end in a squared portion f for receiving a hand-crank g. The s raft e is made hollow to form the bearing of one of the studs or trunnions h of the spindle-casing i. The other trunnionjj, of the casing I; is mounted in the wall of the trail-tube a and the reinforcing-tube b. The

upper opening providedin the trail-tube a for the introduction of the elevating-screw spindles is closed by means'of a cover 7:,wlrich may be fixed by screws and is provided with an opening Zof appropriate width, through which the oscillating spindle passes. The opening at the under side of the trail-tube, through which also the spindle extends downwardly, is closed by means of a cap m.

In fitting up the elevating apparatus thecasing 2', together with the spindles, is first introduced through the upper opening and the trunnionj is placed in its hearings in the tube walls. Then the driving-gear d is placed over the trunnion h, and the opening of the socket c is closed by the bearing of the shaft 6. After applying the handle the device is ready for use. As above mentioned, the cover 7c closes the opening through which the elevating apparatus has been introduced. According to this invention the shaft of the drivinggear 61 forms at the same time a bearing for one of the trunnions of the casing 2'. The elevating apparatus is placed within the trailtube, and is therefore, without having to provide a special protective casing for the gear, protected against mechanical influences.

The whole construction of elevating apparatus is considerably simplified, owing to the driving-gear and shaft being formed as bearing for one of the pivot-studs of the casing, and there is only one opening in the wall of the trail necessary to receive boththe'shaft of the driving-gear and the pivot of the spindi -casing.

Having now particularly described and as- I certained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- In a bearing for the elevating-screw apparatus of field-guns; the combination of the trail-tube; a reinforcement surrounding a perforated portion of said trail-tube; a tubularektension orsocket on said reinforcement; a bushing secured, in said socket; a hollow shaft passing through said bushingg a cr'ankhandle on said hollow shaft; a hevel-gear on said hollow shaft; a trunnioned elevatingscrew casing having a bevel-gear thereon meshing with the bevel-gear on said hollow shaft, one of the trunnions of said hollow my hand in presence of two subscribing wit screw-casing extending into the end of said nesses. hollow shaft, and the other trunnion of said casing having a'bearing in said trail and re- ERNST KARL ROTHE' 5 inforcement; and a screw-spindle in said Witnesses:

screw-casing. v MAXIMILIAN BLUHM,

I n testimony whereof I have hereunto set ERNST HAMMLEB. 

